[proof-of-concept] SW thread independent of the main thread

third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom

Index: third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom
diff --git a/third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom b/third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom
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index 0000000000000000000000000000000000000000..44b3239251dc4e9b69fcee83086194e310d75280
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+++ b/third_party/WebKit/public/platform/modules/serviceworker/service_worker.mojom
@@ -0,0 +1,39 @@
+
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module blink.mojom;
+
+import "url/mojo/url.mojom";
+
+interface ServiceWorkerService {
+  WorkerStarted(int32 embedded_worker_id);
+};
+
+struct ServiceWorkerResponse {
+  string? url;
+  uint16 status_code;
+  string? status_text;
+  // blink::WebServiceWorkerResponseType response_type;
+  // ServiceWorkerHeaderMap headers;
+  string? blob_uuid;
+  uint64 blob_size;
+  string? stream_url;
+  // blink::WebServiceWorkerResponseError error;
+  // base::Time response_time;
+  // bool is_in_cache_storage = false;
+  // std::string cache_storage_cache_name;
+  // ServiceWorkerHeaderList cors_exposed_header_names;
+};
+
+
+interface IsolatedWorkerClient {
+  OnFetchEvent(int32 response_id, int32 event_finish_id, string url, bool is_navigate) => (bool handled, ServiceWorkerResponse? response);
+};
+
+interface IsolatedWorkerHostService {
+  OnThreadStarted(int64 version_id, IsolatedWorkerClient client);
+  OnScriptEvaluated();
+  OnWorkerStarted();
+};